Simultaneous Nadir Overpasses (SNOs) between GOES-16 and NPP
TLE Epoch: 2018 12 22.  Predictions up to the next  14.0 days:

     Date     Time(GOES-16)   GOES-16 Lat/Lon  NPP Lat/Lon    Distance(km)  Time Diff(sec)
 12/23/2018   06:11:20   (  -0.01, -75.16) (  -0.68, -72.02)  358.06                80
 12/24/2018   18:33:17   (   0.00, -75.16) (  -0.49, -77.32)  247.01                80
 12/25/2018   18:17:12   (   0.01, -75.16) (   0.54, -72.80)  269.11                80
 12/27/2018   06:38:59   (  -0.01, -75.16) (   0.65, -78.07)  331.36                80
 12/28/2018   06:17:35   (  -0.02, -75.16) (  -0.39, -73.54)  185.06                80
 12/29/2018   18:42:11   (   0.01, -75.17) (  -0.78, -78.85)  418.77                80
 12/30/2018   18:20:46   (   0.02, -75.18) (   0.19, -74.31)   98.39                80
 01/02/2019   06:23:49   (  -0.01, -75.20) (  -0.04, -75.05)   17.04                80
 01/04/2019   18:29:39   (   0.00, -75.23) (  -0.14, -75.82)   68.02                80
 01/05/2019   18:08:15   (   0.01, -75.24) (   0.89, -71.29)  449.87                80